Door lock



Dec. 30, 1930 HOLTZMAN 1,787,272

DOOR LOCK Filed March 12, 1925 Patented Dec. 30, 1930 PATENT OFFICE JOHNHOLTZMAN, OF NEW YORK, N. Y.

DOOR LOCK This invention relates to door securing means and has as oneof its objects to provide simple, efl'fective and novel types of locks,that may be readily applied and easily operated.

Another purpose is to produce a lock, operable by a knob on one side ofthe door or a key on the other and having a double swinging bolt ofunusual sturdiness engageable with a rigid, firinly anchored keeper.

With this and other objects in mind, reference is had to the attachedsheet of drawings illustrating practical embodiments of the invention,and in which '16 Figure 1 is a plan view of one type of door lock madein accordance with the invention.

Figure 2 is a sectional view, taken on line 2-2 of Figure 3,illustrating itsapplication.

Figure 3 is a sectional view taken on line 3-3 of Figure 2.

Figure 4 is a detail view of the bolt element used in the lockstructure.

Figure 5 is asectional view taken on line 55 of Figure 4; and

Fig. 6 is a fragmentary sectional view showing a slightly different formof bolt construction from that illustrated in Fig. 3.

Referringmore in detail to the drawings, Figures 1 to"(5 inclusive showa lock com- '30 posed of a casin having an outer or cover plate 26,enclosing marginal walls 27 and a partial bottom plate 28, containingopenings 29, similar opening 30 being formed in the plate 26..

A keeper, having securing flanges 31 and 32 secured to the jamb of thedoor is provided with upstanding, hook-like pro ections 33, freelyinsertible through the openings 29 and 30 in the lock casing, as bestseen in Figure 2, being firmly anchored, and the-extending plate 28 ofthe casingis disposed over the ange 31 when the door'is closed.

A tumbler lock, generally designated by the numeral 34, is operated b akey 35 and held in the door by the usua bolts 36 passing through a plate37 A square stem 38 extends from the lock 34, through the plate 37 intoand through the lock casing 25 and has secured at its 50 outer end anoperating knob 39.

Application filed March 12, 1925. Serial No. 14,9110.

A bushing 40 guides the stem through a removable cover plate 41, held byscrews to the casing, and another bushing 42 in the cover plate 26,guides the stem 38 at its upper end adjacent the knob 39.

A stud 43, integral with the casing cover plate 26, extends into thecasing, its end being in proximity to the plate 41, and encircling thestud is a--sleeve 44. On said sleeve is mounted the bolt hub 45 which isprovided with protruding bolts 46. Said bolts 46 are bevelled in theproper direction (Fig. 5) to allow the bolts to ride over the hooks 33of the keeper when the door is swung shut, against the action of thetension spring 47. After thebolts pass the hooks 33, said spring servesto retract the bolts, which consequently are swung under the hooks 33into locking position. One end of the spring 47 is secured within thelock casing and the other to an arm 48 reaching rearwardly from the hub45.

A plurality of teeth 49 on the upper part of-the hub 45 are engageablewith mating teeth 50 on a disc 51 secured to the sleeve 42 and thus itwill be seen that upon rotating the knob 39 or the key 35, the bolts 46may be moved into or out of engaging position, this movement beinglimited by an arm on the disc making contact with stop pins 53 and 54set in the casing plate 26.

A screw 55 is adjustable in the plate 26 and adapted to engage in anopening 56 in the hub 45 when it is desired to positively maintain thebolts in a locked position.

The construction shown in Fig. 6 embraces a hub 45' having extended boltportions 46' engageable with the keeper comprising elements 33'. Thelatter are undercut to receive extensions 46" projecting from the sideedges of the bolt portions. The operating mechanism may otherwise be thesame as that aforedescribed.

Although the foregoing is generally descriptive of a preferredembodiment of my invention, it is probable that changes andmodifications can be made therein and still bf. within the scope andspirit of the appended c aims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. A look comprising a casing, a stem rotatable therein, a stud integralwith said casing, a hub rotatable thereon, operative connections betweensaid stem and hub, bolts extending radially in spaced relation from saidhub, and a keeper having hooked extensions engageable by said bolts.

2. 'A lock comprising a casing, a bolt having angularly disposed armspivotally mounted therein, said arms extending integrally from a commoncenter, means to actuate said bolt from either side of said casing, akeeper having overhanging portions engageable with said armssimultaneously, and means to normallymaintain said arms and keeperelements in engagement.

3. A look comprising a casing, a stem rotatable therein, a stud integralwith said casing, a hub rotatable thereon, operative connections betweensaid stem and hub, integral bolts extending angularly from said hub, akeeper having extending elements projecting through said casing toengage said bolts, and a spring urging said bolts into engagement withsaid keeper elements.

4. A door lock comprising a casing, a stem integral therewith, a sleeveon said stem, a hub rotatable on said sleeve, a pair of angularlydisposed bolts integral with said hub, a keeper having raised hooks topass through said casing, said hooks being engageable by said bolts, atension spring attached to, said hub to normally cause engagement of thebolts and hooks, spur teeth on said hub, a segmental pinion engagingsaid teeth, a stop for said pinion and means to impart a partialrotation to said pinion.

5. A door lock comprising a casing, to be secured to a door and having apart extending over an adjacent amb thereof, said extending part havingconvergent openings, a keeper fixed to the door amb, integral hookmembers on said keeper to pass through the mentioned openings, a pair ofswinging bolts pivoted in said casing, means in said casing to normallycause said bolts to engage the keeper hook members and combined key andknob members operable to swing said bolts out of engagement with saidhooks.

6. A door lock comprising a hollow casing to be fixed on a door andhaving a part extending past the j amb thereof, said extending parthaving one or more openings, a post extending integral inward from saidcasing, a hub rotatable on said post, one or more projections on saidhub movable into the sphere of the openings, a keeper fixed on the jambof the door, said keeper having hook-like elements to reach through theopenings in said casing to engage said projections when swungthereunder, resilient means to normally rotate said projections intoengagement with the hook-like elements, and manually operated means toswing said projections froni their engaging position.

7. A door lock comprising a casing having an overhanging part containingopenings, a keeper having elements insertible through said openings andpresenting inreaching hooks, a bolt pivoted in said casing to engage thekeeper elements, means for normally causing engagement, therebetween,means for manually moving said bolt out of engagement, and means tosecure said bolt when in engagement.

8. A door lock comprising a casing having an overhanging part containingopenings, a keeper having elements insertible said openings andpresenting inreaching hooks, a bolt pivoted in said casing to engage thekeeper elements, geared means for rotating said bolt into and out ofoperative position, means to secure the bolt when in locked position, astop for said geared means, and manually actuated means to operate saidgeared means.

9.- In a door look, a casing, a spring tension bolt mounted therein,said casing having its front and side faces extended beyond the end ofsaid bolt whereby a housing is formed integral with and at one end ofsaid casing, said housing having a plurality of divergingly inclinedslots formed through its outer face, a keeper plate co-operating withsaid door lock keeper hooks on said plate to extend into said slotstoprevent the keepers from being forced laterally, a rotatable bolt havingelements to engage each keeper hook similtaneously, and key operatedmeans to actuate the bolt.

10. In a lock for a door swinging about a vertical axis the combinationof a casing containing the locking mechanism, adapted to be secured tothe side of the door, a keeper adapted to be secured to a door jambhaving hooks extending therefrom, a portion of said casing extendingbeyond the edge of said door and having a plurality of openings in itsside adjacent to the door adapted to re ceive said hooks, and a springtension bolt extending beyond the edge of the door and enclosed by saidextending casing portion, said bolt having parts to engage said hooks,said hooks being radial with respect to the axis of said bolt when thedoor is swung inits closed position.

11. A door lock comprisinga casing to be secured to a door having a partextending over an adjacent jamb thereof, said extending part having aplurality of spaced convergent rectangular openings, a keeper fastenedto the door jamb, integral hook members on said keeper to pass throughthe mentioned openings, and a tensioned latch bolt pivotally mounted inthe casing to engage the hooks of the keeper when the bolt 1sinoperative position.

12. In a door lock comprising a casing to be secured to a door andhaving a part thereof extending over the adjacent door jamb thereof,said extending part having a plurality of angularly inclined openings, akeeper fixed to the door jamb, integral hook members on said keeper topass through the mentioned openings, and a spring actuated bolt movablein the casing and having an interlocking engagement with the keeperhooks when said bolt is in its engaging position.

13. In adoor lock, the combination of a casing to be fastened toa doorwith the end of said casing extending over the space hetween the doorand the door jamb and presenting a solid wall at its end, said extensionhaving a plurality of spaced openings, a keeper plate fastened to thedoor jamb, hook members projecting from said keeper plate, a springactuated mechanism mounted in said casing, said mechanism comprisingabevelled member for each of the hook members, said bevelled membersbeing integrally connected with each other and being all movable in thesame direction for interlocking with said keeper plate, and each of saidbevelled members arranged on closing of the door, simultaneously tostrike against and ride over the corresponding hook of the keeper whensaid hook passes through the openings of said casing, and key operatedmeans to move the mechanism to its inoperative position. r

14. A door lock comprising a casing to be secured to a door having apart extending over an adjacent jamb thereof and presenting a solid wallat its end, said extension having a plurality of spaced slots, a keeperplate fastened to the door jamb, a plurality of hooks projecting fromsaid plate and ada ted to enter said slots, a spring actuated loc ingmechanism, said mechanism including a plurality of locking bevelledmembers integrally connected with each'other and being movable in thesame direction, when actuated by the hooks of said keeper upon theclosing of the door, whereby said bevelled members will automaticallyinterlock with said keeper and manually operated means to move saidlocking mechanism to its inoperative state.

15. A door lock comprising a casing to be secured to a. door and havinga part extending over an adjacent janib thereof, said extending parthaving a-pair of spaced openings and presenting a solid wall at the endthereof, a keeper plate fastened to'said jamb, a pair of hooks extendingfrom said keeper plate, said hooks adapted to pass through saidopenings, assring operated bolt mounted in saidcasing an comprising apair of looking bevelled members integrally connected with each otherand both movable in the same direction for interlocking engagement withsaid keeper, said bevelled members being arranged, upon the closing ofthe door, to strike and ride over both hooks of the keeper andautomatically interlock with the same and key operated means to movesaid locking members out of locking engagement with the hooks of saidkeeper.

16. A lock having a plurality of rockingly mounted locking membersintegrally connected. with each other and movable in an arcuate path, akeeper plate having a phirality of similar spaced projectionsoutstanding therefrom, a pivot for said locking members, mechanism torock said locking members as a unit on said pivot, a casing for saidmechanism having a portion thereof surrounding said locking members whensaid lock is in inoperative state, said casing portion having aplurality of spaced slots to re-. ceive said projections of the keeperplate and said locking members being adapted to interlock with saidprojections thereby locking the casing to the keeper plate, the extentof the rocking motion of said locking members being substantially equalto the width of one 1 I of the slots in the casing, spring means mountedin the casing for normally maintaining-said locking members in operativestate, and manually operated means for rock-- ing said members as a unitout of operative engagement with the keeper plate.

17 In a door lock, the combination of a casing adapted to be secured toa door, and containing a lockin mechanism, a keeper plate adapted .to befastened to a door jamb and having spaced projections extendingtherefrom, a portion of said casing being adapted to extend beyond theedge of said door and having spaced openings adapted to receive saidprojections, a plurality of pivotally mounted spaced locking membersintegrally connected to each other and adapted to extend beyond theadjacent edge of the door and enclosed by said extending portion, saidlockin members when actuated by the mechanismdieing arranged to move asa unit in an arcuate path through a distance substantially equal to thewidth of each of the openings and into the openings to engage the spacedprojections simultaneously, and key operated means to actuate saidlocking mem-j bers to release the same from looking engagement with theprojections.

18. A door lockcomprising a casing to be secured to a door, said casinghaving an extension projecting over the adjacent door jamb, saidextension having a plurality of spaced slots, a keeper plate adaptedtobe fastened to the door jamb, a plurality of spaced aperturedprojections outstanding from said plate and adapted to enter said slots,a plurality'of locking members integrally connected with each other andmovable as aunit in the same direction for interlocking with theprojections of said keeper plate and being pivotally mounted on a commonpivot in said casing for movement in an arcuate direction into and outof the apertures of the projections, the distance of the movement ofsaid locking members in the extension of the casing being approximatelyequal to the width of the slots formed in said extension,mechanismmounted in the casing for simultaneously swinging said locking memberson said pivot to release said members out of the locking engagement withthe keeper plate, and key operated means to actuate said mechanism.

19. A look having a plurality of pivotally mounted spaced lockingmembers integrally connected with each other and swingable about acommon pivot, a keeper plate for said locking members having outstandingproj ections spaced apart a distance equal to that between the membersand adapted to interlock with the members, a casing enclosing saidlocking members, said casing overlapping said keeper and having spacedopenings spaced a art a distance equal to that between the mem rs forthe reception of said projections, mechanism for rocking said lockingmembers on said common pivot for withdrawing said locking members out ofthe interlocking engagement with the projections, the rocking movementof said members being approximately through a distance equal to thewidth of the openings, and manuallyoperated means for rocking, saidlocking members to disengage said members from the interlockingengagement with the keeper plate.

20. A look having a plurality of rockingly mounted locking members,movable in an arcuate path as a unit, a keeper plate having a pluralityof similar spaced projections outstanding therefrom, a pivot for saidlocking members, mechanism to rock said locking members as a unit onsaid pivot, a casing for said mechanism having a portion thereofsurrounding said locking members when said lock is unlocked, said casingportion having a plurality of spaced slots to receive the projections ofthe keeper plate, and said locking members being adapted to interlockwith said projections to lock the casing to the keeper plate, the extentof the rocking movement of the locking members being substantially equalto the width of one of the slots in the casing, a cover plate detachablysecured to said casing, a bearing projection extending from the innerwall of said casing, the cover plate and the bearing projection beingarranged to guide the locking members in their arcuate path to maintainthe locking members against lateral displacement within the casing whensaid members are swung on said pivot into and out of locking engagementwith the projections of the keeper plate, and manually operated means toactuate said mechanism for rocking the locking members as a unit out ofoperative engagement with the keeper late. p 21. In a look, a pluralityof spaced locking members, a casing open at the rear face thereof, anoscillatory member within the casing integrally connected with andcarrying said locking members and movable in an arcuate path togetherwith said locking members, a keeper plate having a plurality of similarspaced projections outstanding therefrom, a pivot for said oscillatorymember projecting from the casing into the interior thereof toward theopen rear face thereof, mechanism to rock said locking members and theoscillatory member as a unit on said pivot, an extension on said casingsurrounding said look ing members when the lock is in unlocked position,said extension having a plurality of spaced slots to receive the spacedprojections of the keeper plate, and said locking members being adaptedto interlock with said projections to lock the extension to the keeperplate, the extent of the rocking movement of said locking members beingsubstantially equal to the width of one of the slots in the extension, acover plate removably secured to the rear face of the casing to coverthe opening therein, a bearing projection for the oscillatory memberextending from the inner face of the front wall of the casing toward thecover plate and adapted to engage one face of said oscillatory member,means on said oscillatory member extending toward said 9 cover andcooperating with said cover and said bearing projection to maintain saidos cillatory memberand said locking members against displacementlaterally of said casing, and a knob operatively connected to saidrocking mechanism and arranged in front of the front face of the casing.

In testimony whereof I have signed my name to this specification.

JOHN HOLTZMr N.

